Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Salamanca (40% of total searches to Castile and León). The next most popular destinations are Burgos (22%) and Segovia (19%). Searches for hotels in Valladolid (19%) are also popular.
KAYAK users have found double rooms in Castile and León for as cheap as £17 (Salamanca) in the last 3 days. The average price is £98.